Marble relief of Hermes, three nymphs, and Achelo?s, Hellenistic, ca. 320?300 B.C., Greek, Attic, Marble, Island ?, Overall: 11 1/8 x 15 1/2in. (28.2 x 39.4cm), Stone Sculpture, The relief represents Hermes escorting three nymphs and, at the back, th